Charging-truck for furnaces.



W. E. JEWBLL. UHARGING TRUCK FOR FURNACES.

APPLICATION FILED 30125, 1908.

Patented Jan. 18,1910. s sums-Bum" 1.

W i tnesses. 6%: m 4% W. E. JEWELL.

CHARGING TRUCK FOR FURNACES.

APPLICATION FILED NOV. 25, 190B.

Patented Jan. 18,1910.

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Ill!!! Inventor.

Attorney.

W. E. JEWELL.

CHARGING TRUCK FOB FURNACES.

APPLICATION FILED nov. 25, 1908.

Patented Jan. 18,1910.

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. Inventor.

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WALTER E. JEWELL, F BUFFALO, NEW YORK.

CHARGING-TRUCK FOR FURNACES.

Specification of Letters Patent.

Patented J an. 18, 1910.

I Application filed November 25, 1908. Serial No. 464,454.

To all whom it may concern:

Be it known that I, \VALTER E. 'JEWELL, a citizen of the United States,residing at Buffalo, in the county of Erie and State of New York, haveinvented a certain new and chine complete.

useful Improvement in Charging-Trucks for Furnaces, of which thefollowing is a specification.

This invention relates to a charging machine which is principallyadapted for carrying boxes to or from annealing ovens.

The object of the invention is to provide a very simple machine capableof traveling and operating under its own power and in which the liftingmechanism is movable independently of the balance of the machine.

The invention also relates to certain details ofconstruction, which willbe hereinafter described and claimed reference being had to theaccompanying drawings in which a preferred adaptation of the machine isshown.

Figure 1 is a side elevation of the ma- Fig. 2 is a top plan view of themachine complete. F ig. 3 is an enlarged detached central verticalsection on line a (I, Fig. 2 through the lifting cylinder. Fig. 4 is ahorizontal section on line I) I), Fig. 3. Fig. 5 is an enlarged detachedcentral section through the differential mechanism and the connectinggearing, the supporting shafts being shown in side elevation. Fig. 6 isa detached bottom view of the top supporting bar of the liftingcylinder. Fig. 7 is an interior view of the differential gearing. Fig. 8is a detached view of the clutch gear. Fig. 9 is the upper annularmember of the piston of the lifting cylinder. Fig. 10 is a centralsection through one of the driving wheels. Fig. 11 is a fragmentarysection through the differential gearing on line 62 d, Fig. 7. Fig. 12is a detached front view of the lifting frame. Fig. 13 is a detached topview of the rear traction wheel and its operating gear.

In referring to the preferred adaptation of the machine shown in thedrawings in detail like numerals designate like parts.

The machine briefly consists of a rear steering section, an intermediateboiler section and a forward driving and lifting section.

The steering section consists of a frame 1 which is riveted to the rearside of the intermediate boiler and extends rearwardly therefrom, avertical shaft 2 journaled in said frame and carrying a horizontal gearwheel 3 near its upper end which is journaled on ball bearings 4 asshown in Fig. 13. and a vertical traction wheel 5 at its lower end and asteering column 6 having a pinion T at its lower end which meshes withthe gear wheel 3 and a steering handle 8 at its upper end.

A seat 9 is arranged over the frame 1 being mounted at the rear end of aspring member 10 which is attached at its front extremity to the frontportion of the frame 1 and bends rearwardly, see Fig. 1.

A guard consisting of a metal loop 11 is fastened at its front ends tothe frame 1 and bends rearwardly to form a protecting element extendingbehind the rear extremity of the seat 9.

The boiler section consists of an upright cylindrical shell 12 having afurnace portion 13 at the bottom. The furnace portion 13 has the usualdoor 14 and a slide door 15 is arranged in the top of the boiler toconstitute a damper.

The driving and lifting mechanisms are located forward of the furnacesection and are both operated by steam supplied from the boiler. Thedriving mechanism and lifting mechanism are independent ol each otherand are operated and controlled separately. The frame of the driving andlifting mechanisms is of skeleton form consisting of two vertical plates16 which are riveted to the front side of the boiler section and framemembers 17 which extend forward from the plate. A steam engine 18 of anywell known form is mounted in the frame members 17 and has the usualreversing mechanism which is operated by a hand lever 19 extendingrearwardly from a crank 20 on the valve rock shaft. T he lever it isslidably supported by a clcat 21 attached to the boiler section, seeFig. I. A large gear Wheel 22 on a counter shaft 23 meshes with a gearwheel 2-1: on the engine shaft 2.; and an annular gear wheel 26 on thecounter shaft 23 meshes with the large master spur gear Wheel 27 of adifferential mechanism. The form of differential mechanism prcferablyemployed is shown in Figs. 5 and 7 consisting of the master gear wheel2? previously described, a plurality of planet pinions 28 journaled onradial shafts which are supported by the master gear wheel and twoopposed beveled gear wheels and 30 which mesh with opposite sides of andin close the planet pinions. A differential shaft 31 is journaled in theforward frame and the hubs of the two beveled gear wheels are supportedthereon, one being unrotatably fastened on said shaft and the other Ittlbeing loosely journaled thereon so as to rotate independently. Theshafts of the pinions are journaled in two part bearings 32 and 3;}which are secured together by a U- shaped bolt 3- as shown in Fig. 11.Spur gear wheels 3.) and 36 are supported on the shaft 31 the gear wheelbeing mounted on a sleeve 37 which in turn is fastened to the bevel gearwheel 29 and the gear wheel 36 being fastened directly to the shaft 31by et screws and a key in the well known way. The gear wheel 35 and itssupporting sleew I}? are rotatably. mounted on the shaft 31. and arelocked against removal by a collar ts pinned to the shaft. see Fig. 5.

The forward supporting wheels 39 and 40 of the machine are journaled atopposite ends of a stationary transverse shaft 41 which is mounted inthe forward frame members. These wheels are provided with comparativelylon inwardly extending sleeves which orm hubs havin Wide bearingsurfaces and are secured in p ace by end p ates 43 which fit in recessesin the outer surface of the wheel and are fastened to the shaft by bolts44 or other fastenings. The supporting wheels are each provided with aninternal gear 45 connected to the opposed bevel gear wheels of thedifferential mechanism. see Figs. 1 and 10.

The lifting mechanism consists of a lifting frame and means for raisingor lowering the lifting frame. The lifting frame is of skeleton formhaving two side members 46 and 47 which are pivoted on pivot pins 48 attheirrear ends to the frame of the driving and lifting section at pointsslightly in front. ofthe boiler section and extend forward in front ofthe forward supporting wheel, projecting sufficiently to provide meansfor carrying a load of annealing boxes. The members 46 and 47 are notseparated as much as the supporting wheels and extend within and betweenthe wheels. Just in front of the supporting wheels the members 46 and 47are prot'ided with short vertical extensions 49 and 50 to which thelower end of a vertical back or support is firmly secured by bolts 51.The construc tion of the vertical back is shown in Fig. 12 consistin oftwo vertical bars 52 and 53 eonneetet by horizontal cross bars 54. Thelifting frame is raised by means of a. steam cylinder the piston of thecylinder bein connected to the lifting frame. A detail eat. of the steamcylinder is shown in Fig. 3 in which the cylinder 55, is fastened at thebottom to the forward frame by a screw 56 'eoek one way tical screwbolts 59. The piston is of peculiar form consisting of a tubular stem 60havin a head 61 at its lower end, an upper ring ike member 62 above thehead and adjustably secured to the head by bolts 63 and a piston ring 64between the head 1 and the rin like member 62. The surfaces of the ringike member 2 and the head ill between which the piston ring 64 islocated are beveled so as to diverge outwardly so that tightening thebolts 63 will force the piston ring outwardly against the inner sur faceof the cylinder thereby providing adjustment to take up wear. The upperend of the tubular stem is fitted in a middle socket or hub (35 in a bartiti. This bar (it? is connected to the side members 46 and -17 of thelifting frame by vertical connecting rods 67 and 68 so that elevation ofthe piston in the cylinder will correspondingly raise the lifting frame.A compression spring 69 is arranged between the head (31 of the pistonand the top supporting bar 58 which is compressed by the upward movementof the piston and serves to force the piston down and lower the liftingmechanism when the steam ressure withm the cylinder is sufficientlyiminished.

The driving mechanism and the lifting mechanism are connectedrespectively to the boiler by independent steam pipes 70 and 71 and therear ends of these pipes are connected by a transverse connecting pipe72 which in turn connects to a common feed pipe 73 extending from theboiler and shown partially in full and partially in dotted lines in Fig.2. An exhaust ipe 74 also extends from the connecting plpe 72 to withina smoke stack 77 as shown in dotted lines in Fig. :2, anti a threewaycock is located in the connec ing pipe at its juncture with the exhaustpipe. By employing a three way cock, steam can be admitted to the pipe71 and conducted to the lifting cylinder by said pipe to raise thepiston upon turning the and then the pipe 71 can be shut off from theboiler and brought into communication with the exhaust pipe 74 toexhaust the steam in the lifting cylinder and )ermit the piston tolower. A throttle valve :6 is located at the rear end of the pipe 70 atits juncture with the connecting pipe 72 and controls the admission ofsteam to the engine.

It will be noted by referring to Figs. 1 and 2 that the throttle valve76, three way eoek 75, steering handle 8 and engine controlling lever 19are all arranged within convenient reach of an operator seated on thesteering section.

One of the great advantages of this machine resides in its simplicityand the strength and rigiditv of its construction as the boiler and isprovided with side flanges 57 to which i section in act forms a portionof the frame a top supporting bar 58 is fastened by verof the machineconnecting the front driving and lifting section and rear steeringsection. Other advantages are in the separate and independent operationof the driving mechanism and the lifting mechanism, the ease andconvenience with which it can be operated and controlled and the factthat the movable frame of the lifting mechanism is comparatively lightand is movable independently of the main portion of the machine.

\Vhile this improved machine is principally adapted for conveyingannealing pots, it may also be utilized with but slight alterations as ashop or foundry power operated machine for transporting heavy articlesto various parts of a shop or foundry.

I claim- 1. In a machine of the character described, the combinationwith a boiler section, of a rear steering section having a frameprovided with a vertical portion riveted directly to the rear side ofthe boiler section and a front section having independent driving andlifting mechanisms and a frame having a vertical portion riveteddirectly to the front side of the boiler section.

2. In a machine of the class described, the

combination with the machine frame, of a lifting frame pivoted at tsrear end to the machine frame and extending in front of the machineframe, a steam cylinder mounted on 1 in said cylinder the machine frame,a piston in said cylinder having a piston head and a stem, rods connecting the piston stem to the lifting frame. a supporting bar and aspring between the piston head and the supporting bar adapted to returnthe piston and lifting machine to their lower position when the steampressure is diminished sufiiciently.

WALTER E. JEWELL. Witnesses:

L. M. SANGSTER, GEORGE A. NEUBAUER.

class described, the I

